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

tools/telemetry/telemetry/core/tab.py

Index: tools/telemetry/telemetry/core/tab.py
diff --git a/tools/telemetry/telemetry/core/tab.py b/tools/telemetry/telemetry/core/tab.py
index 2ecccfd211e034ed36dd7244e20b3a938bc17c89..51970c3b44c4523311b8ef734e5579155f04206b 100644
--- a/tools/telemetry/telemetry/core/tab.py
+++ b/tools/telemetry/telemetry/core/tab.py
@@ -19,6 +19,7 @@ class Tab(web_contents.WebContents):
       # Evaluates 1+1 in the tab's JavaScript context.
       tab.Evaluate('1+1')
   """
+
   def __init__(self, inspector_backend, backend_list):
     super(Tab, self).__init__(inspector_backend, backend_list)
 
@@ -87,7 +88,7 @@ class Tab(web_contents.WebContents):
     return self.browser.platform.CanCaptureVideo()
 
   def Highlight(self, color):
-    """Synchronously highlights entire tab contents with the given RgbaColor.
+    """Synchronously highlights entire tab contents with the given color.
 
     TODO(tonyg): It is possible that the z-index hack here might not work for
     all pages. If this happens, DevTools also provides a method for this.
@@ -109,12 +110,14 @@ class Tab(web_contents.WebContents):
           });
         });
       })();
-    """ % (color.r, color.g, color.b, color.a, int(color)))
+    """ % (color[2], color[1], color[0], 255,
+           int((color[2] << 16) | (color[1] << 8) | color[0])))
     self.WaitForJavaScriptExpression(
-        '!!window.__telemetry_screen_%d' % int(color), 5)
+        '!!window.__telemetry_screen_%d' %
+        int((color[2] << 16) | (color[1] << 8) | color[0]), 5)

[tonyg, 2014/10/21 16:12:57]

The inlined bit shifting makes me miss some sort of helper in bitmap for getting
colors. Any ideas for a better API?

[mthiesse, 2014/10/22 15:33:10]

Done.

 
   def ClearHighlight(self, color):
-    """Clears a highlight of the given bitmap.RgbaColor."""
+    """Clears a highlight of the given color."""
     self.ExecuteJavaScript("""
       (function() {
         document.body.removeChild(window.__telemetry_screen_%d);
@@ -126,7 +129,8 @@ class Tab(web_contents.WebContents):
           });
         });
       })();
-    """ % (int(color), int(color)))
+    """ % (int((color[2] << 16) | (color[1] << 8) | color[0]),
+           int((color[2] << 16) | (color[1] << 8) | color[0])))
     self.WaitForJavaScriptExpression(
         '!window.__telemetry_screen_%d' % int(color), 5)