Rename DiagnosticEvent to GoogleNowEvent

chrome/browser/resources/google_now/background_unittest.gtestjs

Index: chrome/browser/resources/google_now/background_unittest.gtestjs
diff --git a/chrome/browser/resources/google_now/background_unittest.gtestjs b/chrome/browser/resources/google_now/background_unittest.gtestjs
index 516c3d632d70878f7200989d1ca3dd132f7b57c7..428e34c5a477c92ff4f377efebc2c3baa21e0b28 100644
--- a/chrome/browser/resources/google_now/background_unittest.gtestjs
+++ b/chrome/browser/resources/google_now/background_unittest.gtestjs
@@ -159,7 +159,7 @@ TEST_F(
       mockInitializeDependencies(this);
 
       this.mockGlobals.expects(once()).recordEvent(
-          DiagnosticEvent.EXTENSION_START);
+          GoogleNowEvent.EXTENSION_START);
 
       expectInitialization(this.mockApis);
 
@@ -200,7 +200,7 @@ TEST_F(
       mockInitializeDependencies(this);
 
       this.mockGlobals.expects(once()).recordEvent(
-          DiagnosticEvent.EXTENSION_START);
+          GoogleNowEvent.EXTENSION_START);
 
       expectInitialization(this.mockApis);
 
@@ -239,7 +239,7 @@ TEST_F(
       mockInitializeDependencies(this);
 
       this.mockGlobals.expects(once()).recordEvent(
-          DiagnosticEvent.EXTENSION_START);
+          GoogleNowEvent.EXTENSION_START);
 
       expectInitialization(this.mockApis);
 
@@ -276,7 +276,7 @@ TEST_F('GoogleNowBackgroundUnitTest', 'Initialize_RunGoogleNow', function() {
   mockInitializeDependencies(this);
 
   this.mockGlobals.expects(once()).recordEvent(
-        DiagnosticEvent.EXTENSION_START);
+        GoogleNowEvent.EXTENSION_START);
 
   expectInitialization(this.mockApis);
 
@@ -313,7 +313,7 @@ TEST_F('GoogleNowBackgroundUnitTest', 'Initialize_NoGeolocation', function() {
   mockInitializeDependencies(this);
 
   this.mockGlobals.expects(once()).recordEvent(
-        DiagnosticEvent.EXTENSION_START);
+        GoogleNowEvent.EXTENSION_START);
 
   expectInitialization(this.mockApis);