Purposefully disable system health stories that shouldn't run on WebView.

These stories depend on tabs and/or omnibox. The fact that they don't
run on WebView is intentional, not a bug. So remove them from
expectations and clarify that they shouldn't run on WebView in the
code.

Bug: 865464,865466,865471,867568
Change-Id: I9bbd6a4a87aaa423bdf8d106d3de2d64cf6c8d52
Reviewed-on: https://chromium-review.googlesource.com/1174700
Commit-Queue: Annie Sullivan <sullivan@chromium.org>
Commit-Queue: Juan Antonio Navarro Pérez <perezju@chromium.org>
Reviewed-by: Juan Antonio Navarro Pérez <perezju@chromium.org>
Reviewed-by: Ned Nguyen <nednguyen@google.com>
Cr-Commit-Position: refs/heads/master@{#583292}

tools/perf/expectations.config

@@ -174,11 +174,8 @@ crbug.com/839411 [ Win ] system_health.common_desktop/browse:social:twitter_infi
 crbug.com/846022 [ Linux ] system_health.common_desktop/browse:social:twitter_infinite_scroll [ Skip ]
 
 # Benchmark: system_health.common_mobile
-crbug.com/865464 [ Android_Webview ] system_health.common_mobile/browse:chrome:omnibox [ Skip ]
 crbug.com/714650 [ Android ] system_health.common_mobile/browse:news:globo [ Skip ]
-crbug.com/865466 [ Android_Webview ] system_health.common_mobile/long_running:tools:gmail-background [ Skip ]
 crbug.com/708300 [ Android ] system_health.common_mobile/browse:shopping:flipkart [ Skip ]
-crbug.com/865471 [ Android_Webview ] system_health.common_mobile/browse:chrome:newtab [ Skip ]
 crbug.com/738854 [ Nexus_5X ] system_health.common_mobile/load:tools:drive [ Skip ]
 crbug.com/738854 [ Android_Webview ] system_health.common_mobile/load:tools:drive [ Skip ]
 

tools/perf/page_sets/system_health/chrome_stories.py

@@ -38,6 +38,8 @@ class SearchOmniboxStory(system_health_story.SystemHealthStory):
   URL = 'https://www.google.co.in'
   SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
   TAGS = [story_tags.EMERGING_MARKET]
+  # WebView has no omnibox, so not supported.
+  WEBVIEW_NOT_SUPPORTED = True
 
   def _DidLoadDocument(self, action_runner):
     app_ui = action_runner.tab.browser.GetAppUi()
@@ -72,6 +74,8 @@ class MobileNewTabPageStory(system_health_story.SystemHealthStory):
 
   SUPPORTED_PLATFORMS = platforms.MOBILE_ONLY
   TAGS = [story_tags.EMERGING_MARKET]
+  # WebView has no tabs, so this story is not supported there.
+  WEBVIEW_NOT_SUPPORTED = True
 
   def _DidLoadDocument(self, action_runner):
     app_ui = action_runner.tab.browser.GetAppUi()

tools/perf/page_sets/system_health/long_running_stories.py

@@ -97,6 +97,9 @@ class LongRunningGmailDesktopForegroundStory(_LongRunningGmailDesktopBase):
 class LongRunningGmailMobileBackgroundStory(_LongRunningGmailMobileBase):
   BACKGROUND = True
   NAME = 'long_running:tools:gmail-background'
+  # This runs a gmail story in a background tab, and tabs aren't supported
+  # on WebView.
+  WEBVIEW_NOT_SUPPORTED = True
 
 
 class LongRunningGmailDesktopBackgroundStory(_LongRunningGmailDesktopBase):

tools/perf/page_sets/system_health/system_health_story.py

@@ -22,6 +22,10 @@ class _SystemHealthSharedState(shared_page_state.SharedPageState):
   """
 
   def CanRunOnBrowser(self, browser_info, story):
+    if (browser_info.browser_type.startswith('android-webview') and
+        story.WEBVIEW_NOT_SUPPORTED):
+      return False
+
     if story.TAGS and story_tags.WEBGL in story.TAGS:
       return browser_info.HasWebGLSupport()
     return True
@@ -56,6 +60,7 @@ class SystemHealthStory(page.Page):
   SUPPORTED_PLATFORMS = platforms.ALL_PLATFORMS
   TAGS = []
   PLATFORM_SPECIFIC = False
+  WEBVIEW_NOT_SUPPORTED = False
 
   def __init__(self, story_set, take_memory_measurement,
       extra_browser_args=None):
@@ -108,3 +113,4 @@ class SystemHealthStory(page.Page):
     action_runner.tab.WaitForDocumentReadyStateToBeComplete()
     self._DidLoadDocument(action_runner)
     self._Measure(action_runner)
+