ignore com.google.android.gms proguard warnings

build/patches/Remove-binary-blob-integrations.patch

@@ -25,6 +25,7 @@ Parts of this patch were developed by csagan5, uazo and others.
 License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html
 ---
  ...em_webview_bundle.AndroidManifest.expected |   5 -
+ build/android/gyp/proguard.py                 |   2 +
  chrome/android/BUILD.gn                       |  48 +-
  chrome/android/chrome_java_sources.gni        |   5 -
  .../features/cablev2_authenticator/BUILD.gn   |   2 -
@@ -103,7 +104,7 @@ License: GPL-3.0-only - https://spdx.org/licenses/GPL-3.0-only.html
  .../gms/ChromiumPlayServicesAvailability.java |  10 +-
  weblayer/browser/java/BUILD.gn                |   1 -
  weblayer/public/java/BUILD.gn                 |   1 -
- 79 files changed, 94 insertions(+), 1978 deletions(-)
+ 80 files changed, 96 insertions(+), 1978 deletions(-)
 
 diff --git a/android_webview/expectations/system_webview_bundle.AndroidManifest.expected b/android_webview/expectations/system_webview_bundle.AndroidManifest.expected
 --- a/android_webview/expectations/system_webview_bundle.AndroidManifest.expected
@@ -127,6 +128,18 @@ diff --git a/android_webview/expectations/system_webview_bundle.AndroidManifest.
      <meta-data android:name="org.chromium.content.browser.NUM_PRIVILEGED_SERVICES" android:value="0"/>
      <meta-data android:name="org.chromium.content.browser.NUM_SANDBOXED_SERVICES" android:value="40"/>
      <provider  # DIFF-ANCHOR: a5e78e63
+diff --git a/build/android/gyp/proguard.py b/build/android/gyp/proguard.py
+--- a/build/android/gyp/proguard.py
++++ b/build/android/gyp/proguard.py
+@@ -52,6 +52,8 @@ _IGNORE_WARNINGS = (
+         r'EditorDialogToolbar',
+         # https://crbug.com/1441226
+         r'PaymentRequest[BH]',
++        # com.google.android.gms.cast is stripped down from the build
++        r'class com\.google\.android\.gms\.',
+     ]) + ')',
+     # TODO(agrieve): Remove once we update to U SDK.
+     r'OnBackAnimationCallback',
 diff --git a/chrome/android/BUILD.gn b/chrome/android/BUILD.gn
 --- a/chrome/android/BUILD.gn
 +++ b/chrome/android/BUILD.gn