Revert of Android: Make the spare renderer accessible to all Chrome tabs.

chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java

Index: chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java
diff --git a/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java b/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java
index 0e0bce31304d882ffe9c4e9b8227c73aba0842c9..30d5a8d871bb553cbeb222c1018efb0b2b2110e7 100644
--- a/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java
+++ b/chrome/android/javatests/src/org/chromium/chrome/browser/customtabs/CustomTabActivityTest.java
@@ -1092,13 +1092,9 @@
         } catch (InterruptedException e) {
             fail();
         }
-        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
-            @Override
-            public void run() {
-                assertFalse("Warmup() should have allocated a child connection",
-                        mActivity.shouldAllocateChildConnection());
-            }
-        });
+        assertFalse(
+                "Warmup() should have allocated a child connection",
+                mActivity.shouldAllocateChildConnection());
     }
 
     /**
@@ -1119,13 +1115,9 @@
         } catch (InterruptedException e) {
             fail();
         }
-        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
-            @Override
-            public void run() {
-                assertTrue("No spare renderer available, should allocate a child connection.",
-                        mActivity.shouldAllocateChildConnection());
-            }
-        });
+        assertTrue(
+                "No spare renderer available, should allocate a child connection.",
+                mActivity.shouldAllocateChildConnection());
     }
 
     /**
@@ -1145,13 +1137,9 @@
         } catch (InterruptedException e) {
             fail();
         }
-        ThreadUtils.runOnUiThreadBlocking(new Runnable() {
-            @Override
-            public void run() {
-                assertFalse("Prerendering should have allocated a child connection",
-                        mActivity.shouldAllocateChildConnection());
-            }
-        });
+        assertFalse(
+                "Prerendering should have allocated a child connection",
+                mActivity.shouldAllocateChildConnection());
     }
 
     /**