[Telemetry] Migrate bitmap.py from bitmaptools.cc to numpy

tools/telemetry/telemetry/core/tab_unittest.py

Index: tools/telemetry/telemetry/core/tab_unittest.py
diff --git a/tools/telemetry/telemetry/core/tab_unittest.py b/tools/telemetry/telemetry/core/tab_unittest.py
index 95730322d89642164b6e392d11665c1b21e4ea22..85caa36be176d6c29dcc9007b60e282cf9b24737 100644
--- a/tools/telemetry/telemetry/core/tab_unittest.py
+++ b/tools/telemetry/telemetry/core/tab_unittest.py
@@ -21,6 +21,7 @@ def _IsDocumentVisible(tab):
 
 
 class FakePlatformBackend(object):
+
   def __init__(self):
     self.platform = FakePlatform()
 
@@ -32,6 +33,7 @@ class FakePlatformBackend(object):
 
 
 class FakePlatform(object):
+
   def __init__(self):
     self._is_video_capture_running = False
 
@@ -49,6 +51,7 @@ class FakePlatform(object):
 
 
 class TabTest(tab_test_case.TabTestCase):
+
   def testNavigateAndWaitForCompleteState(self):
     self._tab.Navigate(self.UrlOfUnittestFile('blank.html'))
     self._tab.WaitForDocumentReadyStateToBeComplete()
@@ -170,6 +173,7 @@ class TabTest(tab_test_case.TabTestCase):
 
 
 class GpuTabTest(tab_test_case.TabTestCase):
+
   @classmethod
   def CustomizeBrowserOptions(cls, options):
     options.AppendExtraBrowserArgs('--enable-gpu-benchmarking')
@@ -186,9 +190,10 @@ class GpuTabTest(tab_test_case.TabTestCase):
 
     screenshot = self._tab.Screenshot(5)
     assert screenshot
-    screenshot.GetPixelColor(0 * pixel_ratio, 0 * pixel_ratio).AssertIsRGB(
-        0, 255, 0, tolerance=2)
-    screenshot.GetPixelColor(31 * pixel_ratio, 31 * pixel_ratio).AssertIsRGB(
-        0, 255, 0, tolerance=2)
-    screenshot.GetPixelColor(32 * pixel_ratio, 32 * pixel_ratio).AssertIsRGB(
-        255, 255, 255, tolerance=2)
+    self.assertTrue(bitmap.ColorsAreEqual(
+        screenshot.image[0 * pixel_ratio][0 * pixel_ratio], (0, 255, 0), 2))
+    self.assertTrue(bitmap.ColorsAreEqual(
+        screenshot.image[31 * pixel_ratio][31 * pixel_ratio], (0, 255, 0), 2))
+    self.assertTrue(bitmap.ColorsAreEqual(
+        screenshot.image[32 * pixel_ratio][32 * pixel_ratio],
+        (255, 255, 255), 2))