[Android] Disable all IPH when screenshot mode is enabled.

In its current form, the screenshot mode only disables modal dialogs.

We observed that in-product help bubbles are sometimes visible in the
screenshots.

This CL adds to the screenshot mode by disabling all IPH.

Bug: 964012
Change-Id: I778708ad3d5f6d59c65c9da3097ca7f020e2b151
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1630226
Commit-Queue: Sinan Sahin <sinansahin@google.com>
Reviewed-by: Becky Zhou <huayinz@chromium.org>
Reviewed-by: Theresa <twellington@chromium.org>
Reviewed-by: Tommy Nyquist <nyquist@chromium.org>
Cr-Commit-Position: refs/heads/master@{#664961}

components/feature_engagement/internal/BUILD.gn

@@ -139,6 +139,7 @@ if (is_android) {
       "//base:base_java",
       "//components/feature_engagement/public:public_java",
       "//third_party/android_deps:com_android_support_support_annotations_java",
+      "//ui/android:ui_java",
     ]
   }
 

components/feature_engagement/internal/android/DEPS

+include_rules = [
+  "+ui/android",
+]

components/feature_engagement/internal/android/java/src/org/chromium/components/feature_engagement/internal/TrackerImpl.java

@@ -8,11 +8,13 @@ import android.support.annotation.CheckResult;
 import android.support.annotation.Nullable;
 
 import org.chromium.base.Callback;
+import org.chromium.base.CommandLine;
 import org.chromium.base.annotations.CalledByNative;
 import org.chromium.base.annotations.JCaller;
 import org.chromium.base.annotations.JNINamespace;
 import org.chromium.components.feature_engagement.Tracker;
 import org.chromium.components.feature_engagement.TriggerState;
+import org.chromium.ui.UiSwitches;
 
 /**
  * Java side of the JNI bridge between TrackerImpl in Java
@@ -74,6 +76,11 @@ public class TrackerImpl implements Tracker {
 
     @Override
     public boolean shouldTriggerHelpUI(String feature) {
+        // Disable all IPH if the UI is in screenshot mode. For context, see crbug.com/964012.
+        if (CommandLine.getInstance().hasSwitch(UiSwitches.ENABLE_SCREENSHOT_UI_MODE)) {
+            return false;
+        }
+
         assert mNativePtr != 0;
         return nativeShouldTriggerHelpUI(mNativePtr, feature);
     }